How To Fix TU429 - Meter reading unit &1 is still used in installations

SAP Error Message - Details

• Message type: E = Error

• Message class: TU - Billing/Scheduling/Budget Billing

• Message number: 429

• Message text: Meter reading unit &1 is still used in installations

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message TU429 - Meter reading unit &1 is still used in installations ?

  The SAP error message TU429 indicates that a meter reading unit (MRU) is still being used in installations, which prevents you from deleting or modifying that unit. This typically occurs in the context of SAP IS-U (Industry Solution for Utilities) when you attempt to delete a meter reading unit that is still associated with one or more installations.
  Cause:
  The error arises because the meter reading unit you are trying to delete is still linked to active installations or meter reading points. This linkage means that the system cannot remove the unit without first addressing its associations.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Installations: 
  
  Use transaction codes such as EL31 (for installations) or EL30 (for meter reading points) to find out which installations are still using the meter reading unit in question.
  You can also use reports or queries to list all installations associated with the specific meter reading unit.
  
  
  
  Remove Associations:
  
  Once you have identified the installations using the meter reading unit, you will need to either:
  
  Change the meter reading unit for those installations to a different one.
  Delete the installations if they are no longer needed (ensure that this is in line with your business processes).
  
  
  
  
  
  Delete or Modify the Meter Reading Unit:
  
  After ensuring that no installations are using the meter reading unit, you can proceed to delete or modify it using the appropriate transaction (e.g., EL20 for meter reading units).
  
  
  
  Check for Other Dependencies:
  
  Ensure that there are no other dependencies or references to the meter reading unit in other parts of the system, such as billing or reporting.
  
  
  
  Related Information:
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP IS-U, such as:
  
  EL20: For managing meter reading units.
  EL31: For managing installations.
  EL30: For managing meter reading points.
  
  
  
  Documentation: Refer to SAP Help documentation for detailed guidance on managing meter reading units and installations.
  
  
  User Roles: Ensure that you have the necessary authorizations to make changes to installations and meter reading units.
  
  
  Testing: After making changes, it is advisable to test the system to ensure that the changes do not affect other functionalities.
  
  
  By following these steps, you should be able to resolve the TU429 error and manage your meter reading units effectively.